Intermittent Fault Diagnosis
WARNING: This page is about a different car, the 2000 Mercury Mystique, 2000 Ford Pickup, 2000 Ford F550 Super Duty, 2000 Ford F450 Super Duty, and 2000 Ford Contour. However, it is still accessible from the selected car via links, so may be relevant.
Before proceeding with INTERMITTENT FAULT DIAGNOSIS, ensure that mechanical system tests and inspections do not reveal a problem. Check TSBs for possible repairs. Intermittent fault TEST PROCEDURES require duplicating circuit or component failure to identify problem. These TEST PROCEDURES may lead to computer module setting a DTC (on some systems) which may help in diagnosis.
If vehicle being tested does not produce DTCs, perform PARAMETER IDENTIFICATION (PID) DATA MONITOR PROCEDURE . Ensure all accessories as well as dome, trunk and hood lights are off. While monitoring PIDs, perform TEST PROCEDURES .